Typewriting-machine



1.' H. BARR.

. TYPEWRITING MACHINE. APPLICATION FILED SEPT. H, I9i7.

Patented Mr. 2, 1920.

3 SHEETS-SHEET l.

WITNESSEE J'. H. BARR.

TYPEWRITING MACHINE. APPLICATIONFILEDISEELH.19u.

Wrrmfi 15:55

HIS ATTURNEY Pateted Mar. 2, 192C.

WITNEEEEE.

J. H. BARR.

TYPEWRITINGVMACHINE.

APPLrcATioN FILED SEPT. 11. |917.

1,332,375. Patented Mar. 2, 1920.

3 SHEETS-SHEET 3.

INVENTDR y @im HIEATTURNE.

v Original applicationled OFFICE.

JOHN H. BARR, 0F NEW YORK, N. Y., ASSIGNOR TO REMINGTON TYPEVVRITERCOMPANY,

OI? ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPEWRITING-MACHINE.

Patented Mar. 2, 1920.

March 31, 1917, Serial No. 158,912@ E Divided and this application filedSeptember 11, 1917. Serial No. 190,696.

T0 all whom, t may concern.'

Be it lniown that I, JOHN H. BARR, citizen of the United States, andresident of the borough of Manhattan, city of New York, in the county ofNew York and State -o't New York, have invented certain new and usefulImprovements in Typewriting-Machines, of which the following is aspecification.

My present invention relates to case shifting devices for typewritingmachines. Its principal object is to provide new and improved devices ofthe character specified.

To the above and other ends which will lhereinafter appear, my inventionconsists in the features of construction, combinations of devices, andarrangements of parts here inafter described and particularly pointedout in the claimsu v This application is a division ot my priorapplication Serial No. 158,913, tiled March 31,1917, now Patent No.1,311,675, dated Jul 29,1919.

T e preferred form of the invention is illustrated in the accompanyingdrawings, wherein- Figure 1 is a front to rear vertical sectional viewof a typewriting machine embodying my invention, parts ot the machinebeing omitted.

Fig. 2 is a transverse vertical sectional view, taken on planesindicated by the broken dotted line a: in Fig. 1 and looking rearwardly.Fig. 3 is a perspective view of my inventlon.

The main frame of the machine comprises side plates 1 and a rear plate 2provided with ears 3,.the side plates and rear plate being secured infixed relationship by screws 4:. A supplemental U-shaped plate 5 forprotecting the keyboard is secured to the side plates 1 by screws 6. Theside plates are cut out as indicated at 1u. The top plates that surmountthe side plates are omitted from the drawing. A platen 7,diagrammatically illustrated,v is mounted on4 a carriage foi-'movementback and forth across the top plate under the control of carriage.feeding devices which are 'not herein disclosed but may be ot anydesired construction.

Type bars 8, each provided at the outer end of its shank with a typeblock 9 having .two types, are disposed in an arc below the platen andare adapted to cooperate with the iront face thereof. The type bars arearranged in guide slots indicated at 10 in a vertically disposed typebar support or segment 11. The type bars are pivoted on a common pivotwire 12 suitably secured to the segment 11 and near their free ends arenormally supported on a rest or pad 13 sup ported on a segmental member14: that is se-y cured at its end portions to rods or bars 15 extendingforward from the segment near its ends.

The type bar support or element comprising a segment proper 11 and thesupplemental segment or member is mounted for vertical shiftingmovements, and for this pur- .pose lateral arms or brackets 16 aresecured to the segment 11. in any suitable manner, as by screws 17 anddowels 18. The supporting and guiding means Jfor the segment comprisetwo pairs of parallel bars or arms 19 and 20` both pairs substantiallyhorizontally disposed, the pair 19 being arranged above the pair 20. Thearms 19 are spaced apart at each side of the machine and their forwardend portions are pi\ otally connected with the segment extensions 16.The extensions 16 terminate in rear-v wardly extending parallel ears 1Gnwhich receive shoulder screws 21 that pass loosely through the arms 19.Each shoulder screw has a hexagonal head terminating in a rounded top21a. The tops 21a coperate with the heads of screws 22 that are threadedinto the side plates 1 and project inward therefrom, said screws beingheld in adjusted positions by means of jamming nuts 22a. The heads ofthe screws 22 have no nicks, the nicks being preferably in the ends ofthe Shanks. The screws 21 and 22 coperate to prevent lateral vibrationor displacement of the segment. The rear ends of the arms 19 have fixedpivots 23 projecting inward from the sides oil the plates 1. The lowerpair of arms 2O are arranged A.within the base neer the sides thereof,their rear end portions being provided with hubs 24, which are securedby pins or set screws 25 to a rock shaft 26 which has bearings fixed onthe plates 1. The forward' ends ot the arms 20 are pivotally connectedto a frame or supplemental portion of the segment 11, which frame isadjustably connected to said segment and carries stops for limiting theup and down movements thereof. Said(y framevcomprises two vertical rodsor bars 27 and a connecting cross bar 28. The rods 27 are arranged atthe sides of the segment ll. lThe upper' end portion of each rod isreduced i and screw threaded, as indicated at 27u. The threaded portionsengage in threaded openings in the extensions 16 and below such eX-tensions carry locking .nuts 29. T he lower ends or' the rods 27 areformed with hexagonal heads 30 and below these heads terminate inreduced threaded portions 31 on which are nuts 32. The cross har 28 isconri-ned between the hexagonal heads 30 and the nuts 32 which serve asclamps to make the frame comprising' the rods 27 and the cross bar 28rigid. By loosening, the nuts the rods 27 may be rotated on their axesby a Spanner or other tool applied to the hexagonal heads 30, the nuts29 of course being' also loosened to permit of such rotation. ,is aresult of such rotation the frame 27, 28 and the segment 11 may berelatively adjusted, and after such adjustment may be rigidly held orset in fixed relationship hy tightening' or jamming the nuts 29. Afterthus adjusting or re-adjustmg the frame and segment, 'the Anuts 32 ofcourse should be tightened. Brackets 33 are secured to the under face ofthe cross bar 28 in any1 suitable way, as by spot-welding7 each bracketcomprising` a pair of downwardly extending ears between which is looselyarranged the forward end ot one ot the arms 20. Cross pins 35 secured inthe ears 3d pivotally connect the arms 2O with the cross har 28 andconsequently with the type har segment. The end portions of the crossbar 28 project outward beyond the rods 27 and are provided with pads 36ot liber or the like at their top and bottoni faces.. These padsconstitute stop devices. cach pad coperating; with a stationary Itopdevice. The 'stationary stop devices are constituted by brackets 37 castas p'f .t ot or otherwise suitably secured to the side 'plates 1 andeach bracket comprises an inwardly extending lug or stop proper 38 and alower inwardly extending' lug 39. The lug' is broader than the lun' 38and provides a support for an adjustable stop plate proper 'i0 which isconnected to its support 39 by three screws,- the two outer screwsl 4ibeing ,headed and passing upward loosely through the support 39,screwing into threaded openings in the stopv plate 40. The middle screw42 is threaded-through the support 39 and abuts against the lower faceof the stop plate 4,0, holding it in its uppermost position asdetermined by adjustments of the side screws fil. The upper pad 36 oneach side of the stop bar cooperates with a lug 38 to limit upwardmoi-'ement of the `frame 27-28 and segment ll while the under pads 36coperate with the stop plate 40 to limit downward movements oi said`parts. Normally the segment is maintained in its upper position byspring devices, said spring devices comprising a wire spring 43 coiledaround the rock shaft 26 at its left-hand side. The i inner end of saidspring is hooked into an angular bracket 4:4 screwed to the rear of theframe plate 2, thus providing a stationary anchorage for the spring. Thelefthand end portion of the spring is secured in a collar l5 looselymounted on the shaft 26. The outer end portion of said collar is provided with ratchet teeth which engage with corresponding ratchet teethformed on the inner face of the left-hand hub 24. The collar is providedwith holes to receive a tool by which it may be rotatedv to provide forvarying the tension of the spring` d3. After adjustment the springserves to maintain the collar set by engagement of the two sets oiratchet teeth. The spring 43, acting through the arms 20, normallyovercomes the force oi' gravity and maintains the type bar segment andthe trame depending therefrom in upper position with the top stop pads36 engaged with the lugs 38. In this position the inner or lower casetypes on the type blocks 9 are adapted for printing.

In order to shift or depress the segment for printing with the outer orupper case types, key operated devices are provided, said devicesoperating on the shaft 26 to rock it and swingor move the arms 2O andconnected parts downward. The key operated devices comprise a bail ormember 46 having a body or cross portion 47 and two downwardly bentparallel arms 48 provided with hubs 49 which bear loosely on the rockshaft 26 outside the crank arms 20. A central npstanding rod or arm 50,fixed to the roclr shaft 26? is provided with a T-head 5l to 'which thebail 4:6 is secured by screws 52 passing downward through the crossportion 47. The construction is such that the central portion of thehail is fixed to the central portion of the rock shaft, the end portionsor arms 48 of the bail bearing` loosely on the rock shaft. Lateralheaded pins 53 extending outward from the upper end *i portions of saidarms are engaged loosely hy the rear ends ot horizontally disposed links54, said links being provided with slots indicated at 55 which receivethe pins 53. The forward ends of said links are pivotally connected at56 with the upwardly extending arms 57 of shift key levers, whichfurther comprise forwardly extending arms 58 and hub portions 59, saidarms 58 terminating' in shift keys 60. lThe hub portions 59 hearrotatably on a transverse pivot rod 61 secured at its ends in the sideplates 1. Draw springs 62, anchored at their rear ends to stationarypins 63 and at their forward vends hooked into the arms 57 restore thetrains oi key operated de vices comprising the parts 54, 57 and 58 tomeente normal or lower case position after a downward shifting operationand tend to maintain the lever arms 57 engaged with stop pins 64 thatproject laterally inward from the side plates 1. Theconstruction is suchthat the keys 60 are independent of each other, the looseor lost motionconnection' 53, 55 permitting the bail 46 and rock shaft 26 to be rockedby depressing one of the keys 60 without affecting the other key and theparts controlled thereby. The keys 60 are spaced apart, being arrangedat opposite sides of the printing keyboard and the anguiar levers 57, 58may be kept in proper position 'on the pivot rod 61 by means of p Xedcollars 65 which loosely confine the hubs 59 between said collars andthe adjacent side plates 1. It will be observed that as a result of thedescribed construction the ull, transmitted to either link 54 actuatedEy the associate shift key 60, is further l l transmitted through thepin 53, bail 46 and the middle portion of the rock shaft 26, so that thetorsionto which such rock shaft is subjected does not produce unequalmotion of the two links or arms 20.

Also it will be observed that the shift frame is provided with stopdevices comprising the parts 36 and 37 which are independent of the stopdevices 64 of the actuating mechanism 'controlled by the keys 60; alsothat after the extent of shifting movement ot' the segment llfand itsdepending :trame 27, 28 has been determined j ustment of the stops 38and 40, the position 'or location of the segment 11 maybe independentlyvaried hr set through adjustinnr the relationship between said segmentand its frame 27, 28, as has been described. Duringfthe up and downshifting movements of the segment the rounded tops 21 of the heads ofthe screws 21 coperate with the heads ot the adjustable screws 22 toassist in guiding the segment, preventing/ un! due sidewisemovement orvibration.l The screws 22 are so adjusted in respect to the screws 21that the free up and down shift ,of the segment is not impeded butany-undue side movement is prevented. The heads of the screws 22 are ofsuch diameter that in both lower and upper case positions the roundedtops 21a are contiguous to said heads so that at all times the segmentis gui-ded and controlled in respect to lateral vibration. It will befurther understood that a lock of any suitable description may as usualbe provided in connection with one of the shift key levers to hold thesegment depressed in upper case position.

The type bars hitherto described are provided each with a train of keycontrolled actuating,r devices. Each train coperates -with a cam slot 66in the associate type bars and comprises a bell crankhaving a lon arm 68and a short arm 69. The bell cranks with a headed pin 84 by the relativead? 4so that if one of the are ymounted in slots indicated at 70, formedin the member 14, said bell cranks having a common segmental pivot wire70 mounted on said member 14. The long arm 68 of each bell crank isprovided with a headed pin 71 which engages in the slot 66 of theassociate type bar and operates the latter. The shorter arms 69 of thebell cranks vare connected by links 72 with the upstanding arms 73 ofanother set of bell cranks which comprise also arms 74, said bell cranksbeing pivoted on a pivot wire 75 supported on a frame that is detachablymounted in the basent the machine and comprises rear and front bars 76and 77 and connecting end bars 78. Each bell crank 73, 74 is providedthat engages in the cam slot, indicated at 85,'formed in the rear endportion of the key lever. There are two kinds of key levers 86 andV 87,differing somewhat in shape, each key lever 86 being provided with aprinting key lever 88 and being pivoted on a fulcrum rod 89 common toall of the key levers 88. Guide slots 90 in the bar 77 receive the keylevers 86 and 87. The key levers 87 have keys 88 and are pivoted on acommon pivot wire 91. Draw springs 92, connected to the lever arms 69and anchored to stationary hooks 93, assist to restore the type barsafter actuation.

The type bars and their actuating mechanism need not be more fullydescribed herein since they are primarily the subjectmatter of my priorapplication aforesaid and are claimed in said application and not inthepresent one.

It will be understood that when one of the key levers is depressed thebell crank 737 74 that is directly connected to it is rocked, thismotion being transmitted through the pull links 72 to the connected bellcrank 68, 69, said bell crank operating through its pin 71 on its camslot 66 to swing` the connected type bar upward and rearward to printagainst the platen- Preferably the type bars are provided with shoulders98 that, toward the latter part of the type bar movement, coperate witha universal bar 99 that is comprised in the carriage feeding mechanism,'the universalbar being mounted to shift with the segment 1l. When saidsegment is in the upper position, in which position it prints lowercase, the inner types on the type bars will print as has been stated.`When, however, one of the shift keys 60 has been operated, the type barsegment will be lowered or depressed, as has been explained,

printing keys be actuated, the outer type on the connected type bar willbe caused to print. The levers 73, 74 do not participate in caseshifting movements and when such shifts take place the links 72 swingabout their pivotal points of connection with said levers as centers.

It will be observed that by my present ward therefrom, being providedwith stop devices which coperate with stationary stop devices; that saidrock shaft is operated by independent shift keys which are arranged atopposite sides of the keyboard, said shift keys being connected to linkswhich in turn are loosely connected with parallel rocking arms comprisedin a bail or fore and aft rocking frame mounted on said rook shaft; thatthe connection be` tween the rock shaft and the shift keys comprisesthree arms, a central arm as 5() and two end arms as 48, the central armbeing fixed to the rock shaft and the two end arms loose thereon,connections, as the cross har 4:7, being provided for connecting -thethree arms; that there are provided sets of stops for the type barsupport and other sets of stops for the shift keys and connected devicesfor moving said support; and that when the type bar segment is shiftedthe bell crank levers 68, 69 shift therewith and that at this time thelinks 72 swing about their rear pivotal connections with the stationarybell cranks 73, 74: which, together with the key levers, remainmotionless during the shifting operations.

ll] hat I claim as new and desire to secure by Letters Patent, is :f

'1. In a front strike typewriting machine, the combination of a platen,type bars, a support therefor, a frame rigid with said support andadjustably connected thereto, said frame comprising a crossbarvextending from side to side of the machine within the base, andmeans for controlling and guiding said support comprising two pairs ofparallel pivoted arms, one pair arranged above the other, one pair ofsaid arms being connected to said support nee: its outer ends and theother pair being spaced apart within the base of the machine andconnected directly to said cross bar near its ends.

2. In a front strike typewriting machine, the combination of a platen,type hats, a support therefor, a U-shaped frame adJustably connected tosaid support and depending therefrom, and means for shiftablycontrollingsaid support, said means comprising two pairs of parallel arms, one pairconnected with 'the lripper part of said support and extending rearwardtherefrom and hav- 1,ssa,375

and said segment, stops for said frame, a

pair of parallel arms having stationary pivots and connected with saidsegment, a second pair of parallel arms connected directly with thelower portion of said frame, said second pair of arms being spaced apartso that they are located near the sides of the base of the machine, arock shaft 'on which said second pair of arms are fixed and keycontrolled means for rocking said shaft.

4. In a typewriting machine, the com-- bination of a platen, a type barsupport, and key operated means for effecting a relative shiftingmovement between said support and said` platen, said means comprising. arock shaft, a central arm iiXed thereto, two end arms loosely connectedto said rock shaft, and means for connecting said central arm with saidend arms.

5. In a typewriting machine, the combination of a platen. type bars, asupport for said type bars, and means for controlling said support, saidmeans comprising a rock shaft, a bail having parallel arms looselysurrounding said rock shaft near its ends, a central arm xcd to saidrock shaft and to said bail. independent shift keys at opposite sides ofthe keyboard, and connections be tween each of said keys and one of saidparallel arms.

fi. In a typewriting machine, the cornbination of a platen` type bars,'a support for said type bars. and means for controlling said support`said means comprising a rock shaft` a bail having parallel arms looselysurrounding said rock shaft near its ends, a central arm fixed to saidrock shaft and to said bail, shift key levers spaced apart. and linksconnecting` said shift key levers with said parallel arms.

7. In a typewriting machine, the com bination of a platen, typel bars. asupport for said type hars, and means for controlling saidy support.said means comprising a rock shaft. a bail having parallel arms looselysurrounding said rock shaft near its ends` a central arm fixed to saidrock shaft and to said hail. shift key levers. links pivotally connectedtu said shift key levers and having loose conmctions with said parallelarms, stops for seid levers.. and springs noi mally maintaining l aidkey levers in engagement with said stops.

lll

teasers 8. ln a typewriting machine, the combination of a platen, typebars, a type bar segment, a frame rigid" with said segment andcomprising two parallel uprights and a conmeeting cross bar, stopdevices on said frame, cooperative stationary stop devices, means forailording relative adjustment between the uprights of said frame andsaid segment, key operated devices for shifting said frame and saidsegment and having a lost motion connection. with said segment, saiddevices comprisinga key lever, and stop devices for said key lever.V

Y 9. In a front strike typewriting machine, the combination or' aplaten, type bars, a vertical type bar segment, a frame compris.- ingtwo vertical rods or bars and a cross bar connecting the lower endportions of said rods or bars, the upper portions of said rods having'adjustable screw connections with side portions of said segment, stopdev'ices cooperative with said cross bar for limiting'` up and downmovement of said segment, key operated shifting devices connected tosaid segment, and stop devices for said key operated devices.

l0. ln a front strike typewriting machine. the combination of a platen,type bars, a vertical type bar segment, a frame compris ingl twovertical rods or bars and a cross bar connecting the lower end portionsoi said rods or bars, the upper portions or' said rods having adjustablescrew connections with side portions or" said segment, horizontallydisposed parallel arms havingf stationary pivotal centers and beingpivotally connected with said segment, other horizontally disposedparallel arms parallel also to the irst pair and arranged below'the samein the base of the machine, said other parallel arms havingpivotalconnections with Said cross bar, a, rock shaft to which said otherparallel arms are Hired, and key operated devices for controlling saidrock shaft.

ll. 'In a front strike typewriting ma chine, the combination of aplaten, type' bars, type bar segment, a frame comprising two verticalrods or bars and a cross bar connecting said rods or bars, said rodshaving' adjustable screw connections with said segment, horizontallydisposed parallel rocking arms pivotally connected with. said segment,other horizontally disposed parallel arms parallel also to they firstpair and arranged below the same in the base of the machine, said otherparallel arms having pivotal connections with said cross bar, a keyoperated rock shaft to which said other pair ,of parallel arms arefixed, and a counter- {ialancing spring surrounding said rock shaft andanchored to the frame of the machine.

l2. "in a iront strike typewriting machine,

combination of a platen, type bars, a support therefor, means forcontrolli and guiding said support comprising' sets of parallel arms,and means for preventing sidewise movement of said support, said meanscomprising contact devices movable with said support and having roundedheads, and headed' adjustable screws projecting inward from the sides ofthe frame, the heads of the screws having uninterrupted plane surfacesand providing contact devices with which said rounded heads cooperate,the ends of the Shanks of said screws being provided with nicks forreceiving?` an adjusting;r took 13. in case shitting; mechanism fortypewriting machines, the combination of a shiftable element, anupanddown movable frame connected to said element, a fore-andaft rockingbail, key actuated devices connectedto said bail near its ends,`andequalizing devices for transmitting the shifting movement from said hailto said shiftable o element and to said frame.

14. ln case shifting mechanism for typewritingmachines, the combinationof` a. shiftable element, an up-and-down movable frame connected to saidelement, a oreandaft rocking bail, key actuated devices connected tosaid bail near its ends, a rock shaft., arms tired to said rock shaftnear its ends and pivotally connected to said frame, and

a central arm fixed to said rock shaft and rigidly connected to saidhail.

l5. ln case shittin mechanism for typewriting machines, a s iiftaloleelement, a rock shaft having arms connected to said element, a bailloosely mounted on said rock shaft,

key actuated devices connected to the ends A oit' said bail, and aconnection between said bail and said rock shaft whereby when the bailis actuated at either end its motion is transmitted substantiallyequally to both ot said arms through said rock shaft.

16. In a typewritiner machine, the lcombi-A nation of a type barsegment, a pair of pivoted arms pivotally connected thereto, a

vertically movable frame having an adjust-- able connection withsaidsegment, a second pair oi pivoted arms connected to said ver ticallymovable frame, a rock shaft on which said second pair oi' arms aresupported, a i.

bail loosely pivoted on said rock shaft, an arm rigidly connected tosaid rock shaft and to said bail, shii't keys one at each side ot thekeyboard, 'and connections between said keys and the end portions ofsaid bail.

Signed at the borough of Manhattan, city of New York, in the county ofNew York and State of New York, this 10th day of September, je... D.1917.

` JHN l-l. BARR. Witnesses z @sans Sierre lift. Wanne,

Miti

